Electric recorder.



J. human. ELECTRIC RECORDER. 'APPLIOATIOB' FILED NOV.'7, 1912.

1,092,323, Patented Apr. 7, 191

'4 EHBETS-SHEET 1.

J'. L. ZANDER. ELECTRIC RECORDER. APPLICATION FILED NOV 7, 1912.

Patented'Apr. 7, 191% I I 4 SHEETSSHEET 2.

J. L. ZANDER. ELECTRIC BEOOEDE R. APPLICATION FILED NOV. 7, 1912.

1,092,323, Patented Apr. 7, 191i 4 4 SHEETS-SHEET 3. 7.2g. .5,

.63 MA' HHHM "WW- /3 am y tibknL. gander J. L. ZANDER. ELECTRIC RECORDER. APPLICATION FILED NOV. 7, 1912,

Patented Apr. 7, 1914 4 SHEBTS-SHEET 4.

I v k 30 l- I 56' 3 31mm (wwwm Jami Zander nection with a galvanometer,

UNITED STATES gn' OFFICE.

JOHNFL. ZANDEB, OF IRVINGTON, NEW JERSEY, ASSIGNOE TO CHAR/LES O. SANDER,

' v 0F IRVINGTQN, NEW JERSEY.

ELECTRIC RECORDER.

To all whom it may concern:

Be it known that I, J OHN, L. Zen'onu, a citizen of the United States, residing at Irvington, in the county of Newark and State of New Jersey, have invented certain new and useful Improvements in Electric Recorders, of which the following is a specification. v

My inventionrelates to improvements in electric 18CO1(lIS,tl16 object of the invention being to provide an improved mechanism which prints upon a moving chart a plurality of diiferent characters, each charact r serving to measure a separate electric cir uit, whereby the instrument records the neasure in voltage or temperature in connection with a plurality of thermo-couples.

A further object is to provide, in conmechanical means for printing upon a-moving chart a plurality of difi'erent characters, and provid improved mechanical means for opening 01 dclosing the electric circuits, where by each'eircuit is closed 1nv regular order and the character representing each circuit 1s printed upon the chart when its circuit is closed,and the position of the printing device controlled by the galvanometer. I

A further object is to provide a galvanometer' indicator needle with an improved const; notion of printing device which con- Y sistsof a plurality of spring-held characters rangements electric circuits,

which are moved into printing relationship with a chart in accordance with the pressure on the printing device, and said characters singly and together operating to print different characters on the chart.

A further object is to provide in combination with my improved printing device, improved mechanical means for inking the printing device, for opening and closing and improved means for exerting pressure, on the printing device in accordance with the circuit which is closed so that at each closure of the same circuit, the same character will be printed on the chart.

" With these and other objects in view, the invention consists in certain novel features of construction and" combinations and ar- I of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is' a perspective view illustrating my-im- Specification of Letters Patent.

1 support the Patented Apia-7, 1914.

Application filed November 7, 1912. Serial No. 729,922.

'provements. Fig. 2 is a view in side elevation on an enlarged scale illustrating my improved printing device. Figs. 3, at, and 5 are bottom plan views on an enlarged scale of the printing devioe showing the same in its three different positions to form Bits three different characters. Fig. 6 is a view; in cross section through the casing showing my improved mechanism in plan. Fig. 7 is a view in vertical section through the casing illustrating the mechanism in end elevation. Fig. 8 is a view in section on the line 8'8 of Fig. 6. Fig. 9 is a view in section on'the line 9-9 of Fig. 6. Fig. 10. is a fragmentary view on an enlarged scale illustrating the arrangement of teeth controlling the printing dei iCe and the ink pad therefor. Fig. 11 is a fragmentary perspective view illustrating one end of the chart,

carrying .view of Fig. 13 is an electric my improvements.

,70 represents a casing having a trans- ;parent hinged door 71 normally secured in closed position by a lock 72, and in said casing a metallic base plate 4 is supported 1 upon strips 5 secured to the sides of the casing. This base supports a galvanometer 6 having an oscillating indicating needle 7 which oscillates to measure voltage or the temperatures of thermo-couples, and on the free end of this indicating needle 7, I provide an improved printing device 8; A convenient method of attaching the, printing device is to construct the pointer in the form of a tube and project the restricted end 9 of the printing device into the same. This printing device is adapted to print upon a moving chart 10 which passes over a cylin-v drical drum 11, and is held firmly upon the drum by means of rollers 12 connected to spring arms 13 fixed to the posts 14 which drum. The ends of the drum against which the chart is pressed by means of the rollers 12, are roughened as indicated at 15, so that the chart is firmly held against slipping and is uniformly fed from a supply roll 16 supported by a rod 17 in hangers 18 dependent from base plate 4.

The drum, as above stated, is supported by the posts l i, and one trunnion or stub 19 of the drum projects beyond the 30st, and has fixed thereto a pinion 2O Whic meshes with a gear 21 fixed to a spring case 22. A

ordinary balance wheel 27.

second spring case 23 has a large gear 24 thereon, and the gears 21 and 24 drive atrain of gearing 26. This train of gearing is supported in a frame 31 and movement of the train of gearing is controlled by the The train of gearing drives a shaft 28, upon the outer end of which three wheels 30 are secured, and on the inner end of said shaft, aitoothed wheel 29 is secured.

The three wheels 30 control the opening and closing of the electric circuits and for convenience of description, and to distinguish then; from other wheels, they shall be hereinafter termed circuit closing wheels.

On one side of the wheel 29, a toothed ring 32 is secured'and this toothed ring controls the movement of an inking pad The inking pad is curved in the arc of a circle con centric with the pivot point of indicating needle 7, and at its ends is connected to pivoted hangers 34, and normally hangs by gravity out of the path of movement of the printing device 8.

A lever 35 is fulcrii'med between, its ends on the frame 31, and at one end bears against a linger 36 on one of the hangers 34, while the opposite end of this lever lies in the path of movement of the teeth on ring 32. This ring turns in a direction to bring the beveled face of the teeth against the end of lever 35, and when the lever 35 is engaged by one of the teeth 32, the lever 35 is operated to swing the inking pad into the path of movement of the printing device, which will be hereinafter described.

The printing device is normallyielevated by reason of the inherent elasticity in the needle 7, and is pressed downwardly by a U-shaped bail 37 pivotally supported at its ends in a frame 38 secured to base plate 4. The side members of this bail are provided with downwardly projecting fingers 39 which limit the lateral swinging movement of needle 7, and the intermediate portion of the bail is curved concentrically with the pivot point of the needle 7, so that regardless of'the lateral position of the printing device; it will be engaged. at the same pointby the bail. This 'bail, at one side, is pro vided with a rearwardly projecting crank arm 40, and said arm 40 is connected by a link '41 with a lever 42. This lever 42 is ful crumed near its forward end in the frame 38, and. is provided at its screw-dreaded rear end with an adjustable weigh 43 to counterbalance the weight of the bail, hence relieving the clock mechanism of the weight of the bail. The forward shorter end of lever 42 is formed with a tooth 44 which is engaged by the teeth on wheel 29 and these teeth are of a peculiar arrangement illustrated on an enlarged scale in Fig. 10. In other words, the circular series of teeth are in the form of ratchet teeth, and are arranged in a series of three, varying in height, hence the wheel is provided with a circular series of teeth, every third tooth being alike, but arranged in sets of three, the first tooth 45 being the lowest, the next tooth 46 higher, and the next tooth 47 the highest and beginning again with a low tooth 45 and so on around the periphery of the wheel. This dillercnt depth of teeth varies the pressure upon the printing device, and this variation in pressure causes the printing device to form on the chart 10, different characters.

The printing device 8 comprises three angular spring members 48, 49, and 50 respectivcly, all integral at one end or fixed together where they oin with the reduced end 9 to he projectcd into the tubular needle 7, but at their free ends, the said springs are apart and spring 48 normally projects an appreciable distance below the end of spring 49, and the latter norma ly projects an appreciable distance below the end of spring 50. The end of spring 48 constitutes a straight type 5]. On the end of spring 48, a curved type 52 is provided, and a somewhat differently curved type 53 is provided on the end of spring 50. \Vhen only suilicient pressure appliedtto the printing device to bring the type 51 into contact with the chart, a single bar will be printed on the chart which will resemble the numeral 1 When a. greater pressure is applied, as tor-example, when one of the teeth 46 is operating the pressure de vice, not only type 5'1 will be moved into contact with the chart, but also type 52, and by reason of the fact that the springs are all joined at ne point, the downward movement of the springs will cause them'to come together at their printing end, so that a character somewhat resembling the numeral 2 will be printed on the chart. When the maximum pressure is applied, as for example, when the tooth 47 is in operative relation, the printing device will be forced downward so that all three of the type 51, 52, anc 53 will come together and print on the chart a character resembling the numeral 3 I The three different positions of the printing device in its printing relationship to the chart are indicated in plan inFigs. 3, 4, and 5, and the particular character'formed is controlled altogether by the downward movement of bail 37, this movement being controlled by the teeth 45, 46, and 47 as above explained. v

The circuit closing wheels 30 are provided around their peripheries with radially pro jecting pins 54, each wheel having a like number of pins, but the pins of the respective wheels having a lead over each other, so that none of the pins are in alinement.

On the base 4, three approximately U- binding post 67 on the casing.

shaped spring contacts 55, 56, and 57 are laterally to measure the current and as be- ;located and are secured to a strip of insulafore the bail 37 will move downwardly, but tion 58 which insulates them from each other-this time, by reason of the fact that the and from the base. Thesecontacts are conmovement of the bail is controlled by a nected by electric wires 59, 60, and 61 with tooth 46, the printing device will receivea I binding posts 62, 63, and 6 k respectivelyon downward pressure sufiicient to move type the outside of the casing. It is to be under- 52 against the chart as well as type 51, and stood that the three contacts 55, 56, and 57 as these two types come together, they will are in the path of movement respectively of print upon the chart, the numeral 2 as indithe three sets of pins 5 1 on the three wheels cated in plan in Fig. 4. This circuit is 30, so that the circuits through these conthen broken and one of the pins next entacts are closed in order when a pin passes gages contact 57, so that the electric circuit between and engages the contact. is closed through thermo-couple 3. As he The galvanometer is electrically connected fore, needle 7 will swing laterally to measto the ground or base 4 by means of a .wire ure the current, and hail 37 will move down- 65, while the opposite pole of the galva- Wardly, but this time a tooth 17 controls the I nometer is connected by a wire 66 with a downward pressure and gives to theprinting device its maximum movement, whic In Fig. 13 I illustrate a simple form of brings all three of the type 51, 52, and 53 electric diagram in which my improvements together as indicated in Fig. 5, and upon are shown in connection with three thermothe chart the numeral 3 will be printed. couples 1, 2, and 3, the positive pole of the The operation above described is repeated respective couples being connected with the again and again at regular intervals, so that contacts 55, 56, and 57 respectively, and the an examination of the chart at any time negative pole of all of the couples connected will show exactly the fluctuations in the with the negative pole of the galvanometer different circuits. At regular intervals, the 6, and the positive pole of said galvanom teeth. on ring 32 will cause the ink pad 33 eter electrically connected by means of the to swing outwardly into the path of movewire 65, and through the base 4 with the ment of the printing device as above ex shaft 28 and the three wheels 30 thereon plained, so that the type 51 and 52 will re-.

The chart 10 above referred to comprises ceive the ink from the pad when pressed a plurality of longitudinal lines 68 crossed downwardly by the bail 37. At such time, by curved lines 69. These lines are curved of course, the printing device will not-print so that regardless of the swinging movement upon the chart, but the teeth are so arranged of the indicating needle 7 the printing dethat the inking of the type is uniformly acvice will print properly'between the lines. complished so that there is no appreciable The operation is as follows The inking skip in the recording of any particular cirpad 33 is normally out of the path of move.- cuit. v ment of the printing device 8, and we will While I have described my, improved assume that the wheels 30 are in a position printing device as forming numerals 1, 2; to move one of the pins into engagement and 3, it is of course to be understood that with contact 55, which controls the circuit to other characters might be so formed, and

r the thermo-couple 1. As soon as this conwhile I have described my inventionin contact is made, the electric circuit is closed benection with three circuits, it is to be undertween the thermocouple 1 and the galvastood that thisnumber may be varied so 1 0 nometer, so that the needle? offche galvathat the recorder may be adapted for yanometer will swing laterally to measure the rious uses, but will accurately record the current and will stop at such lateral position. measurements in various circuits. W

Atthis time, one of the teeth 45 will, 'Various slight changes mightbe made in\ through the medium of the mechanism the general form and arrangement of parts above described, cause the bail 37 to move described without departing from my in"- downwardly and exert a. pressure upon the vcntion, and hence I do not limit myself to printing device 8, but this pressure will be the precise details set forth, but consider only sufiicient to bring type 51 into contact myself at libertyio make such changes and with the chart 10, it being understood. that alterations as fairly fall within the spirit the chart is slowly or continuously moving, and scope of the appended claims.

' hence upon the chart the type 51 will re- Having thus described. my invention, what cordfthe numeral 1 and indicate upon the I claim as new rind desire to secure Letters chart. the temperature or voltage of the Patent is: thermo-couple 1. As soon as this is done, 1. In an apparatus of the character dethe circuit to the thermo-couple 'is broken scribed, the combination of a printing deasthe pin passes contact 55. Next, a pin'on vice comprising a plurality of characters, another "of the Wheels 30 will engage conmeans imparting ,various pressures to the tact 56am close the oir'cuit'through thermoprinting device, whereby the several characcouple 2. As before, the ncedle 7- will swing ters are caused to operate singly or together I toform single numerals, substantially as described.

2.- In an apparatus of the character described, thecombination of a printing device comprising a plurality of characters, mechanical means imparting various pressures to the printing device, whereby the several characters are caused to operate singly or together to form single numerals, substantially as described.

o. In an apparatus or the character described, the combination of a printing device comprising a plurality 01 characters,

sures to the printing device, whereby the several characters are caused to operate singly or together in the forming of single characters, said means eon'iprising a toothed Wheel having teeth of various length, a pivote'd bail engaging the printing device, and means operated by the teeth for moving the bail and exerting varying pressures on the printingdevicc, substantially as described.

5. In an apparatus of the character described the combination of a printing device comprising a plurality of characters,

means imparting various pressures to the printing device, whereby the several characters are caused to operate singly or together in the forming of nngle characters,

said. means comprising a toothed Wheel having teeth of various length, a pivoted bail engaging the printing device, and a lever operated bythe teeth for moving the bail aoeaaee and exerting'varying pressures on the printing device, substantially as described.

6. In an apparatus of the character described, the combination of a printing de vice comprising a. plurality of characters,

,mechanical means imparting various pressures to the printing device, whereby the several characters are caused to operate singly or together in the forming of single characters, sa id means comprising a toothed Wheel having teeth of various length, a pivoted sail engaging the printing device, and a lever operated by the teeth for moving the bail and exerting varying pressures on the print ing device, substantially as described.

7. A printing device for electric recorders, comprising a plurality of characters normally apart and adapted to be moved to gether in printing, substantially as de scribed.

8. A printing device for electric recorders,

comprising a plurality of characters nor- -'-mally apart and adapted to be moved together in printing, each of said characters supported on spring arms and elastically held out of engagement With each other, substantially asdescribed.

9. In an apparatus of the character described, the combination of" a recording device comprising a plurality of characters, means whereby the several characters are caused to operate singly or together in the forming of a'record, said means comprising a toothed wheel having teeth of different height, means engaging the recording de-- vice and means operated by the teeth for operating said last mentioned means and thereby causing the operation of the characters of the recording device, singly or together,

In testimony whereof-I have signed my name to this specification in the presence of tWo subscribing Witnesses,

, JQHN L ZANDEH.

Witnesses.

Louis l BIL Y, JOSEPH Morison. 

